feat: complete CMS v2 with Docker, Fischerei, Meetings, Verband modules + UX audit fixes

Major changes:
- Docker Compose: full Supabase stack (11 services) equivalent to supabase CLI
- Fischerei module: 16 DB tables, waters/species/stocking/catch books/competitions
- Sitzungsprotokolle module: meeting protocols, agenda items, task tracking
- Verbandsverwaltung module: federation management, member clubs, contacts, fees
- Per-account module activation via Modules page toggle
- Site Builder: live CMS data in Puck blocks (courses, events, membership registration)
- Public registration APIs: course signup, event registration, membership application
- Document generation: PDF member cards, Excel reports, HTML labels
- Landing page: real Com.BISS content (no filler text)
- UX audit fixes: AccountNotFound component, shared status badges, confirm dialog,
  pagination, duplicate heading removal, emoji→badge replacement, a11y fixes
- QA: healthcheck fix, API auth fix, enum mismatch fix, password required attribute

packages/features/site-builder/package.json

@@ -13,6 +13,7 @@
     "./api": "./src/server/api.ts",
     "./schema/*": "./src/schema/*.ts",
     "./components": "./src/components/index.ts",
+    "./context": "./src/context/site-data-context.tsx",
     "./config/*": "./src/config/*.tsx",
     "./actions/*": "./src/server/actions/*.ts",
     "./hooks/*": "./src/hooks/*.ts"